CBSE Class 7 - Geography - Chapter: Inside Our Earth (Worksheet) Book: Our Environment (#class7Geography)(#eduvictors)(#class7SocialScience)

CBSE Class 7 - Geography - Chapter: Inside Our Earth (Worksheet)

Geography: Our Environment

Fill in the blanks with suitable words:

1. The uppermost layer over the earth's surface is called the ________.

2. The innermost layer is the core with a radius of about ________ km.

3. Any natural mass of mineral matter that makes up the earth's crust is called a _____.

4. When the molten magma cools, it becomes solid. Rocks thus formed are called _______ rocks. 

5. These loose sediments are compressed and hardened to form layers of rocks. These types of rocks are called _________ rocks.

6. Igneous and sedimentary rocks can change into _________ rocks under great heat and pressure.

7. Sandstone is an example of _________ rocks.

8. The radius of the earth is _______ km.

9. When limestone (sedimentary rock) is exposed to heat and pressure it changes its physical and chemical properties and forms ________ (metamorphic rock).

10. Granite is an example of __________ igneous rocks.

11. Oceanic Crust is made up of silica and magnesium and is commonly called _____.

12. The core of the earth is mainly made up of nickel and ferrous (iron). It is commonly called ______.

Answers

1: crust

2: 3500

3: rock

4: igneous

5: sedimentary

6: metamorphic

7: sedimentary

8: 6371km or 6400 km (approx.)

9: marble

10: intrusive

11: sima

12: nife

👉See Also:

Ch 1 (Geography) Environment
Geography - Indian States Touching International Borders
Ch 2 Inside Our Earth (Q & A)
Ch3 Our Changing Earth (NCERT Solution)